package chapter3.e5;
class Student{
    public Student(){
    System.out.println("调用了无参构造方法");
}
}
public class Example05 {
    public static void main (String[] args){
        System.out.println("声明对象...");
        Student stu = null;
        System.out.println("实例化对象...");
        stu = new Student();
    }
}
